Basf Aktiengesellschaft

Helmut Kreissler

Klaus Schoettle

Peter Rudolf

Kurt Schmidts

Joachim Hack

Heinz Berger

Dietrich Gruehn

Manfred Gehrung

Friedrich Anslinger

A recording medium possessing an envelope has at least one identification part which is mounted so that its position can be altered but it cannot be accidentally lost, and which is symmetrical about at least one axis, in particular a middle axis, and is associated with at least one wall of the envelope. To permit error-free assembly/handling, the identification part advantageously has a shape which permits at least two equivalent mounted positions on the envelope.

Recording medium with an envelope, and an identification part therefor

A method and apparatus for burnishing the surface of magnetic recording media, wherein there is relative movement between the surface to be burnished and the abrasive member, and the abrasive member is urged against the said surface, the pressure applied being increased over a period of time or at a plurality of locations, and then being reduced again.

Method for the surface treatment of magnetic recording media

Growing community of inventors

Oberkirch, Germany

Helmut Kreissler